Dilator



E. YLISTO.

DILATOR.

APPLICATION men MAR. 30, 191B.

Patented Feb. 24,1920.

ENTOR.

' ATTORNEY ,EMIL YLI STO, OFWESTERLY, RHODE ISLAND.

DILATOR.

Specification of Letters Patent.

' Patented Feb. 24, 1920.

Application filed March 30, 1918. Serial No. 225,763.

To all whom it may concern:

Be it known that I, EMIL YLrsTo, a citizen of Finland, residing atWesterly, in the county of Washington and State of Rhode Island, haveinvented certain new and useful Improvements in Dilators, of which thefollowing is a specification.

This invention relates to improvementsin dilators of the expanding typeand its object is to provide means for dilating and exercising thevagina to enable it to more readily perform its function at the time ofchild birth. The invention is intended for use for a period of one monthor more previous tochild birth whereby the amount of pain incident tothis function is minimized. With the foregoing and other objects in viewthe invention consists in the combination and arrangement of parts to behereinafter fully described, pointedout in the appended claim andillustrated in the accompanying drawing which forms a part of thisspecification and in which- Figure 1 is a view of my improved dilator inside elevation.

Fig. 2 is a cross section takenon line 2-2- of Fig. 1.

Fig. 3 is a fragmentary sectional'view oi" a tubular member employed.

Fig. 4 is an enlarged fragmentary sec tional view of the device.

Like reference characters denote corre- 'sponding parts throughout theseveral views.

My invention comprises a pair of oppositely disposed curved ribs 1, 2 ofcounterpart formation to the inner faces of which a plurality ofbearings 3 are fixed, said bearings being arranged inoppositelydisposedpairs. Each of said ribs at one end, is curved to form a nose 4. Each ofthe said bearings ,8 pivotally carries one end of the arms 5 which armsare arranged in pairs and are pivotally secured to the collars 6, 7 8,above and below a shaft 9, the collar 6 being formed integral withorsecured to a rotary hub 10 secured by rivet 11 to a grooved portion 11of the said shaft and the collar 7 being movable with relation to thesaid shaft 9 and secured by tie rods 11 to the said collar 8 whichcollar is fast to a sleeve 12 which is threaded interiorly forengagement with the threads 13 of the said shaft 9, said sleeve beingalso provided with a handle 14. The l said shaft 9 extends entirelythrough and beyond the sleeve 12 and terminates in a head 15 by means ofwhich said shaft 9 may be rotated and moved longitudinallyrelatively tothe said sleeve 12.

The operator by holding the handle 14 with one hand may rotate the head15 to move the shaft 9 longitudinally of the sleeve 7 12 thus moving thecollars 7 and 8 toward or away from the collar 6 and so, through themedium of the arms 5 expanding or con tracting' the dilator by therelative movement of its ribs 1, 2. Instead of rotating the head 15 theoperator may hold the same stationary and rotate the handle 14 ifdesired to'impart a rotaryv expanding or contracting motion to thedilator. The operator inserts the nose 4 in the vagina with the dilatorin contracted position and by (BX-- panding and contracting the same inthe manner previously described the organ may be exercised andstretched.

I What is claimed is In a dilator, a threaded shaft, a threaded sleevearranged upon said shaft, a head car- I ried by said shaft'whereby itmay be moved relatively to said sleeve while the latter is heldstationary, a handle carried by said sleeve whereby it may be movedrelatively to said shaft while the latter is held sta-' tionary, a hubrotative upon said shaft, a collar fixedly carried by said hub,

a collar fast upon said sleeve, a third rotary-expanding or anon-rotary-contracting motion to said ribs when said sleeve is heldstationary.

In testimony that I claim the foregoing as my own I have hereto afiixedmy signature in the presence of two subscribing witnesses.

, EMIL YLISTO. Witnesses:

Amos M. ELSON, CLARENCE E. Roonn.

